MOUNT HOREB, Wis. — Witnesses described children fleeing after the sound of gunshots near a Wisconsin middle school where authorities said an active shooter was “neutralized” outside the building Wednesday. There were no reported injuries to those inside the school. For panicked kids and their parents, the incident was terrifying. Parents described children hiding in closets, afraid to communicate on cell phones, and one middle schooler said his class initially fled the school gym on in-line skates. [time-brightcove not-tgx=”true”] Authorities in Mount Horeb said without giving details that the “alleged assailant” was harmed, and witnesses described hearing gunshots and seeing dozens of children running. The district said in several Facebook posts starting around 11:30 a.m.